/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package frontend;

import hibernate.impl.GroupDAOImpl;
import hibernate.impl.RoleDAOImpl;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import modelmapping.Group;
import modelmapping.Role;
import util.PentaUtil;
import validator.FormValidator;
import validator.ValidatorError;

/**
 *
 * @author Valentina
 */
public class RoleUpdateServlet extends HttpServlet {

    protected List myErrors = new ArrayList();
    protected List mySuccesMsg = new ArrayList();

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        String strRoleId = request.getParameter("id");
        String strIdGroup[] = request.getParameterValues("idGroup");
        String roleName = request.getParameter("name");
        String roleDescription = request.getParameter("description");

        myErrors.clear();
        mySuccesMsg.clear();

        try {
            //Validation
            myErrors = FormValidator.verifyRequiredField(roleName, "Name");
            myErrors = FormValidator.verifyRequiredField(roleDescription, "Description");

            if (strRoleId == null) {
                myErrors = verifyUnicField(roleName, "Name");
            }

            if (myErrors.isEmpty()) {

                RoleDAOImpl roleDAOImpl = new RoleDAOImpl();
                Role role = null;

                if (strRoleId == null) { // ADD
                    role = new Role();
                } else { //Update
                    role = (Role) roleDAOImpl.retrieve(Long.parseLong(strRoleId));
                }

                role.setName(roleName);
                role.setDescription(roleDescription);

                if (strIdGroup == null) {
                    role.getGroups().clear();
                } else if (strIdGroup.length > 0) { // ADD si Update daca selectat grupa
                    GroupDAOImpl groupDAOImpl = new GroupDAOImpl();
                    role.getGroups().clear();

                    if (strRoleId != null) {
                        roleDAOImpl.update(role);
                        role = (Role) roleDAOImpl.retrieve(Long.parseLong(strRoleId));
                    }

                    Set<Group> groupSet = new HashSet<Group>();
                    for (int i = 0; i < strIdGroup.length; i++) {
                        Group group = (Group) groupDAOImpl.retrieve(Long.parseLong(strIdGroup[i]));
                        groupSet.add(group);
                    }

                    role.setGroups(groupSet);
                }

                if (strRoleId == null) { // Add case
                    Long id = roleDAOImpl.create(role);
                    setCreateMessages(request, id);
                } else { // Update case
                    roleDAOImpl.update(role);
                }

                PentaUtil.RequestUtil(request, response, "RoleServlet");

            } else {
                PentaUtil.getGroupLits(request);

                request.setAttribute("name", roleName);
                request.setAttribute("description", roleDescription);
                request.setAttribute("myErrors", myErrors);

                PentaUtil.RequestUtil(request, response, "WEB-INF/frontend/RoleUpdate.jsp");
            }


        } catch (NumberFormatException nfe) {
            myErrors.add(new ValidatorError("numberFormatError", "Number Format Error"));
            PentaUtil.setError(request, response, myErrors);
        } catch (Exception e) {
            myErrors.add(new ValidatorError("systemError", "System Error"));
            PentaUtil.setError(request, response, myErrors);
        }
    }

    private List verifyUnicField(String value, String filedName) {

        RoleDAOImpl roleDAOImpl = new RoleDAOImpl();

        if (!roleDAOImpl.verifyIfUnicField(value)) {
            myErrors.add(filedName + " exist in the system");
        }

        return myErrors;
    }

    private void setCreateMessages(HttpServletRequest request, Long id) {
        if (id > 0) {
            mySuccesMsg.add("Record Added Successfully");
            request.setAttribute("mySuccesMsg", mySuccesMsg);
        } else {
            myErrors.add("Error:: Record was not added");
            request.setAttribute("myErrors", myErrors);
        }
    }
    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">

    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
